What Is an Enzyme Bath?
How Fermentation Works
Fermentation heat created by the power of nature
An enzyme bath is a warming therapy that uses fermentation created when microorganisms break down nutrients in rice bran. As they become active, natural fermentation heat is produced without relying on electricity, gas, or external heating. This heat is soft and lasting, gently surrounding the body with steady warmth. Because the heat comes from natural fermentation, it feels mild and low in stimulation, allowing you to relax in a calm, comfortable warmth.
We use 100% rice bran produced in Japan. Its fermentation changes from day to day depending on the condition and humidity of the rice bran, as well as the amount of air it contains. We carefully condition the rice bran by combining dedicated equipment with hands-on care, while our staff make the final assessment by closely observing and feeling its condition. Through this attentive daily management, we maintain stable fermentation and a comfortable temperature, creating a reassuring environment even for first-time guests.
Our Commitment
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Pure 100% Japanese
rice branWe use pure 100% Japanese rice bran. By choosing a natural ingredient without unnecessary additives, we create an enzyme bath environment that feels gentle and reassuring.
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Nurturing Fermentation
“Daily Care”As the fermentation conditions change from day to day, our staff carefully monitor and adjust the temperature, humidity, and consistency of the rice bran, using specialized tools and equipment where appropriate.
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Unhurried cooling time
in a private room after the bathWe also value the time after the enzyme bath. A private cooling space lets you enjoy the lingering warmth without worrying about others.
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Pure Japanese towels
that gently touch the skin after bathingAll towels and linens that touch the skin are made in Japan. They feel gentle and comfortable even on skin after the enzyme bath.
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Well-prepared amenities
so you can visit empty-handedTowels, wear, cleansing items, and skincare products are all provided. You can stop by easily after work or between errands.
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A total wellness experience for body and mind
The experience does not end with the bath. From counseling to cooling time, we offer a complete flow designed to help body and mind settle into ease.
Benefits of Enzyme Baths
Rice bran is rich in beauty-supporting components such as vitamin E, B vitamins, and ceramides, and has long been appreciated in Japan as an ingredient that helps care for the skin. These components blend gently with the skin, and when the whole body is wrapped in rice bran, the experience becomes a soft, comforting form of care.
In an enzyme bath, touching rice bran with the entire body creates a luxurious sensation that everyday life rarely offers. Many guests notice a moist, smooth feeling during and after the bath, enjoying time wrapped in the gentleness of a natural material.
An enzyme bath warms the body from within through fermentation heat and encourages thorough perspiration even in a relatively short time. As the body warms deeply, circulation is expected to be supported and the whole body may feel gently loosened.
After the bath, many guests feel refreshed and lighter, making it a popular way to reset from everyday fatigue. Enjoy a natural, easy refresh as you warm slowly and sweat without strain.
Our Approach to
Safety and Hygiene
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Hygiene
Rice bran is mixed daily and managed while checking its temperature, humidity, aroma, and overall condition. After each use, the bath is carefully restored and given the necessary resting time to encourage re-fermentation. Guest rooms and shower facilities are cleaned after every use, and towels and bathwear are replaced with freshly laundered items. Through consistent daily care and cleaning, we maintain an environment where guests can relax with confidence.
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Temperature control
Rice bran naturally generates heat through fermentation. At KOH, we measure the temperature every day and adjust the mixing and the way the rice bran is applied according to its condition that day. We will guide you within a comfortable range, including the bathing time, based on how you experience the heat and your physical condition, so please feel free to let us know.
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Security & Privacy
Please keep all belongings and valuables in the locker inside your private room. From changing to bathing and cooling time, everything takes place in a fully private room, so you can relax without unexpectedly encountering staff or other guests.